Test: Multiplication - Primary 3 MCQ

To find the total number of toffees, multiply the number of children (35) by the number of toffees each child receives (4): \(35 \times 4 = 140\).

The table of 9 displays a unique pattern where the ones digit decreases sequentially from 9 to 0 while the tens digit increases, reflecting its structure.

The first step in using expanded notation is to break the number into its tens and ones components, allowing for separate multiplication of each part.

The multiplication table of 5 consistently ends with 0 or 5. For example, the products are 5, 10, 15, 20, etc.

Any number multiplied by 0 equals 0. This is a fundamental property of multiplication.

All the listed properties are true for multiplication: it is commutative (order does not matter), associative (grouping does not change the product), and has an identity element (any number multiplied by 1 remains unchanged).

Identifying the numbers involved in the problem is crucial for solving multiplication word problems accurately, as it helps in setting up the correct equation.

Using skip counting on a number line allows you to visualize multiplication by making equal jumps. For instance, for \(6 \times 2\), you would jump 6 places twice.

Rounding the multiplicand to the nearest ten before multiplying is an effective method for estimating products, allowing for quicker mental calculations.

Lattice multiplication utilizes a grid where numbers are placed horizontally and vertically, allowing for organized multiplication and addition of products.

In lattice multiplication, you write the tens above the diagonal and the ones below, allowing for a clear organization of the multiplication steps.

Multiplying a number by 2 is equivalent to doubling it, which means adding the number to itself.

The multiplicand is the number that is being multiplied by another number, known as the multiplier. For example, in the equation \(5 \times 9 = 45\), 5 is the multiplicand.

Starting from 0 and skip counting by 5 results in the sequence: 0, 5, 10, 15, 20, illustrating how skip counting works.

The multiplication of a two-digit number by a one-digit number can be written both horizontally and vertically, depending on the method of calculation chosen.